EP1424214A1 - Verfahren und Vorrichtung zum Glätten und Verdichten der Oberfläche von Bleistiften oder dergleichen - Google Patents
Verfahren und Vorrichtung zum Glätten und Verdichten der Oberfläche von Bleistiften oder dergleichen Download PDFInfo
- Publication number
- EP1424214A1 EP1424214A1 EP03018894A EP03018894A EP1424214A1 EP 1424214 A1 EP1424214 A1 EP 1424214A1 EP 03018894 A EP03018894 A EP 03018894A EP 03018894 A EP03018894 A EP 03018894A EP 1424214 A1 EP1424214 A1 EP 1424214A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sonotrode
- pencils
- bushings
- smoothing
- ultrasound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/02—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by compressing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/22—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground
- B24B19/24—Single-purpose machines or devices for particular grinding operations not covered by any other main group characterised by a special design with respect to properties of the material of non-metallic articles to be ground of wood, e.g. furniture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43K—IMPLEMENTS FOR WRITING OR DRAWING
- B43K19/00—Non-propelling pencils; Styles; Crayons; Chalks
- B43K19/16—Making non-propelling pencils
Definitions
- the invention relates to the fine machining of surfaces made of wood and wood-based materials, namely rod-shaped elements and especially pencils.
- Wood types such as redwood, jelutong or are used to manufacture wooden pencils Cedar species (Incense cedar, Western red cedar) use, characterized by good Characterize chip properties and therefore the shape Machining by milling a sufficiently clean and well prepared for painting have a fiber-free and tear-free surface.
- the object of the invention is to eliminate the disadvantages of the prior art.
- there is a development for smoothing and compacting the Surface of pencils are proposed, which makes it sustainable stronger smoothing effect and from this a reduction in expenses for to achieve the final treatment of the pens (painting) with high productivity.
- an interface friction affects the surface of the workpieces on all sides.
- the interfacial friction is generated in that the workpieces abut each other be promoted by a sonotrode. It is transported through the sonotrode after machining the pencil blanks and before coating with paint and / or foils.
- constant frequencies in the range from 1 6 to 30 kHz and constant powers of at least 500 W are used, the power input being 0.1 to 0.5 Ws / mm 2 .
- the speed at which the pencils are pushed abruptly through the sonotrode is also constant; the value for this ranges from 20 to 200 mm / s.
- the shape of the cross section of the bushings corresponds to the cross section of the pencils with a small tolerance, namely ⁇ 0.01 mm 2 .
- the sonotrode preferably has a multiplicity of bushings which are arranged along and parallel to the direction of vibration of the ultrasound. To ensure a lasting smoothing effect, their number is limited to 20.
- Both the sonotrode and the bushings preferably have a circular cross section, the outer diameter of the sonotrode (depending on the number of bushings) being between 40 and 120 mm and the lengths of the bushings (corresponding to the thickness of the sonotrode) between 40 and 300 mm.
- 1 shows a schematic representation of the device according to the invention.
- the device consists of the sonotrode 2 with the bushings 5, the transport unit 3 including the plunger 4th as well as the ultrasonic generator 1.
- a roller bearing serves as the feed device Carriage that is moved by a pneumatic cylinder.
- the cut to length Pencil blanks are positioned on a prism and by a driver on the carriage for passage (bore) 5 in the sonotrode 2 moved.
- the sonotrode arises as a result of Interfacial friction of the smoothing effect, so that on the opposite side of the sonotrode emerging pins are smoothed.
- the first round bar element is pushed into the hole by the driver introduced that it is approximately flush with the side facing the sled the sonotrode closes.
- the full piercing of the first pin will reached with the following pen.
- the cycle time depends on the positioning the round rod elements in the prism and is usually 5 s, with about 1 s as the time for piercing is required.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Adornments (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Apparatus (AREA)
Abstract
Description
- 1
- Ultraschallgenerator
- 2
- Sonotrode
- 3
- Transporteinheit
- 4
- pneumatischer Stößel
- 5
- Durchführungen / Bohrungen in Sonotrode
Claims (9)
- Verfahren zum Glätten und Verdichten der Oberfläche von Bleistiften, integriert im Prozeß der Herstellung nach der spanenden Bearbeitung der Bleistiftrohlinge und vor der Beschichtung der Bleistifte mit Lacken oder Folien, bei dem Hochleistungs-Ultraschall in Form einer Grenzflächenreibung, die mittels Transport der Werkstücke durch eine Sonotrode (2) erzeugt wird, auf die Oberfläche der Werkstücke einwirkt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß mit konstanten Frequenzen im Bereich von 16 bis 30 kHz und konstanten Leistungen von minimal 500 W gearbeitet wird und der Leistungseintrag 0,1 bis 0,5 Ws/mm2 beträgt.
- Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Bleistifte Stoß an Stoß mit einer konstanten Vorschubgeschwindigkeit im Bereich von 20 bis 200 mm/s durch die Sonotrode (2) bewegt werden.
- Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß sie ein Ultraschallagregat, bestehend aus einem Ultraschall-Generator (1) und eine Öffnungen, gestaltet als Durchführungen (5), aufweisende Sonotrode (2) sowie zugehöriger Steuereinheit, und eine Transporteinheit (3), die den Transport der Bleistifte zur Sonotrode (2), durch die Sonotrode (2) und von der Sonotrode (2) weg realisiert, umfasst.
- Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Form des Querschnittes der Durchführungen (5) mit einer Toleranz von ±0,01 mm dem Querschnitt der Bleistifte entspricht.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Sonotrode (2) mehrere Durchführungen (5) aufweist, die zur Schwingungsrichtung des Ultraschalles längs und zueinander parallel angeordnet sind.
- Vorrichtung nach Anspruch 4 bis 6 , dadurch gekennzeichnet, daß die Sonotrode (2) 1 bis 20 Durchführungen (5) aufweist.
- Vorrichtung nach Anspruch 4 bis 7, dadurch gekennzeichnet, daß sowohl die Sonotrode (2) als auch die Durchführungen (5) einen kreisförmigen Querschnitt aufweisen.
- Vorrichtungen nach Anspruch 4 bis 8, dadurch gekennzeichnet, daß der Außendurchmesser der Sonotrode (2) zwischen 40 und 120 mm und die Länge der Durchführungen (5) zwischen 40 und 300 mm liegen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10256125A DE10256125B4 (de) | 2002-11-29 | 2002-11-29 | Verfahren und Vorrichtung zum Glätten und Verdichten der Oberfläche von Bleistiften oder dergleichen |
DE10256125 | 2002-11-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1424214A1 true EP1424214A1 (de) | 2004-06-02 |
EP1424214B1 EP1424214B1 (de) | 2005-12-21 |
Family
ID=32240553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03018894A Expired - Lifetime EP1424214B1 (de) | 2002-11-29 | 2003-08-20 | Verfahren und Vorrichtung zum Glätten und Verdichten der Oberfläche von Bleistiften oder dergleichen |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1424214B1 (de) |
AT (1) | ATE313442T1 (de) |
DE (2) | DE10256125B4 (de) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103978810A (zh) * | 2014-05-30 | 2014-08-13 | 常熟市祖博机械有限公司 | 一种用于制笔设备的三工位连接输送滑轨 |
CN104002587A (zh) * | 2014-05-30 | 2014-08-27 | 常熟市祖博机械有限公司 | 一种三工位自动组装制笔设备 |
CN110216759A (zh) * | 2019-07-15 | 2019-09-10 | 苏州唐德机械有限公司 | 一种双工位烫笔机 |
CN110271324A (zh) * | 2019-07-12 | 2019-09-24 | 周奕萌 | 粉笔套 |
CN111546177A (zh) * | 2020-06-15 | 2020-08-18 | 河南职业技术学院 | 粉笔端部磨削装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102729305A (zh) * | 2012-07-22 | 2012-10-17 | 刘增武 | 一种处理木杆铅笔表面的装置 |
DE102021128464A1 (de) | 2021-11-02 | 2023-05-04 | Faber-Castell Aktiengesellschaft | Schleifvorrichtung zum Schleifen beider Stirnseiten eines Stiftes und Verfahren zum Schleifen beider Stirnseiten eines Stiftes |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD292412A5 (de) | 1990-03-08 | 1991-08-01 | Veb Wtz Der Holzverarbeitenden Industrie,De | Verfahren zum bearbeiten mit verzierungen versehener moebelbauteile |
DE19653317A1 (de) | 1996-12-20 | 1998-06-25 | Ima Montagetechnik Gmbh | Verfahren und Vorrichtung zum Verdichten und Glätten von Oberflächen an Werkstücken aus Holz oder dergleichen |
DE29808146U1 (de) | 1998-05-06 | 1998-08-27 | ihd Institut für Holztechnologie Dresden gGmbH, 01217 Dresden | Vorrichtung zur Feinbearbeitung von Rohlingen für Bleistifte oder ähnlichen stabförmigen Elementen |
WO2000015412A1 (en) * | 1998-09-11 | 2000-03-23 | Tetra Laval Holdings & Finance S.A. | An ultrasound unit |
DE19847178A1 (de) | 1998-10-14 | 2000-04-20 | Ihd Inst Fuer Holztechnologie | Verfahren und Vorrichtung zum Glätten von Oberflächen von Werkstücken aus Holz und Holzwerkstoffen |
DE10222993B3 (de) | 2002-05-24 | 2004-01-29 | IHD Institut für Holztechnologie Dresden gGmbH | Vorrichtung zum Wechseln von beheizbaren Werkzeugen |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4100324A (en) * | 1974-03-26 | 1978-07-11 | Kimberly-Clark Corporation | Nonwoven fabric and method of producing same |
-
2002
- 2002-11-29 DE DE10256125A patent/DE10256125B4/de not_active Expired - Fee Related
-
2003
- 2003-08-20 DE DE50301980T patent/DE50301980D1/de not_active Expired - Lifetime
- 2003-08-20 EP EP03018894A patent/EP1424214B1/de not_active Expired - Lifetime
- 2003-08-20 AT AT03018894T patent/ATE313442T1/de active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD292412A5 (de) | 1990-03-08 | 1991-08-01 | Veb Wtz Der Holzverarbeitenden Industrie,De | Verfahren zum bearbeiten mit verzierungen versehener moebelbauteile |
DE19653317A1 (de) | 1996-12-20 | 1998-06-25 | Ima Montagetechnik Gmbh | Verfahren und Vorrichtung zum Verdichten und Glätten von Oberflächen an Werkstücken aus Holz oder dergleichen |
DE29808146U1 (de) | 1998-05-06 | 1998-08-27 | ihd Institut für Holztechnologie Dresden gGmbH, 01217 Dresden | Vorrichtung zur Feinbearbeitung von Rohlingen für Bleistifte oder ähnlichen stabförmigen Elementen |
WO2000015412A1 (en) * | 1998-09-11 | 2000-03-23 | Tetra Laval Holdings & Finance S.A. | An ultrasound unit |
DE19847178A1 (de) | 1998-10-14 | 2000-04-20 | Ihd Inst Fuer Holztechnologie | Verfahren und Vorrichtung zum Glätten von Oberflächen von Werkstücken aus Holz und Holzwerkstoffen |
DE10222993B3 (de) | 2002-05-24 | 2004-01-29 | IHD Institut für Holztechnologie Dresden gGmbH | Vorrichtung zum Wechseln von beheizbaren Werkzeugen |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103978810A (zh) * | 2014-05-30 | 2014-08-13 | 常熟市祖博机械有限公司 | 一种用于制笔设备的三工位连接输送滑轨 |
CN104002587A (zh) * | 2014-05-30 | 2014-08-27 | 常熟市祖博机械有限公司 | 一种三工位自动组装制笔设备 |
CN110271324A (zh) * | 2019-07-12 | 2019-09-24 | 周奕萌 | 粉笔套 |
CN110216759A (zh) * | 2019-07-15 | 2019-09-10 | 苏州唐德机械有限公司 | 一种双工位烫笔机 |
CN111546177A (zh) * | 2020-06-15 | 2020-08-18 | 河南职业技术学院 | 粉笔端部磨削装置 |
Also Published As
Publication number | Publication date |
---|---|
ATE313442T1 (de) | 2006-01-15 |
DE10256125A1 (de) | 2004-06-24 |
EP1424214B1 (de) | 2005-12-21 |
DE10256125B4 (de) | 2006-06-01 |
DE50301980D1 (de) | 2006-01-26 |
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